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The emergence of the term ‘Green Computing’ itself is sufficient to describe its need. Regarding computers, energy estimation is the first step towards optimization. This paper describes a simple model which generates profiling results for scientific applications. It is designed to analyze a software process in order to identify its power consuming components (e.g. Instruction Count). The study specifically...
Synthetic Traffic generation plays a vital role in research related to computer networking. Most of the efforts taken so far by several researchers in the network community are relied on the synthetic traffic generation. Therefore to generate the synthetic traffic; traffic generators are used. Further this synthetic traffic behaves like real traffic and can be used to capture the behavior the network...
Today, the main challenges in front of suppliers of networking hardware and software are to test their product under heavy traffic load. Such investigation is usually carried out in the laboratory where the prodigious amount of traffic is required. So one question emerges here is that from where to bring this tremendous traffic. Networking research community suggests a synthetic traffic generator...
Competition is always a good thing in IT world. It forces us to do our best. Nowadays, in the area of cloud computing, it is at the peak between the larger number of cloud users and cloud providers who view for the opportunity to use and provide services. Competition among cloud users means the price of cloud services never fall very low and between cloud providers mean the price of services never...
Multiplier is an essential functional block of a microprocessor because multiplication is needed to be performed repeatedly in almost all scientific calculations. Therefore, design of fast and low power binary multiplier is very important particularly for Digital Signal Processors. This paper describes a design of fast and low power 8-bit multiplier architecture which implements Urdhva-tiryakbyham...
Color image segmentation is an emerging topic in current image processing research. There exist different techniques for the same. Region based approach like watershed algorithm is one of them. But, watershed approach normally results in problems like over segmentation, noise, etc. In this paper, an efficient approach for the color image segmentation is proposed. Here, the input image is converted...
Satellite color images carry a vast amount of information which needs an efficient image segmentation method to analyze. Because of its simplicity and low complexity, K-Means algorithm is frequently adopted for color image segmentation. But, usually the results of K-Means algorithm suffers from noises and hence over segmentation. This is due to the reasons that K-Means works on the basis of random...
In this paper an integrated circuit capable of generating low frequency signals is presented. These low frequency signals are useful in Deep Brain Stimulation of neural cell which is a therapy of Parkinson's disease. Using sub-threshold circuit design concepts and techniques, the proposed circuit can produce low frequency signals from a current starved voltage controlled ring oscillator. Using a supply...
This paper presents a programmable low dropout regulator (LDO) with high PSRR. A programmable reference voltage required for LDO regulator has been implemented using a 5-bit digital to analog converter made of capacitive voltage divider network. The LDO regulator's PSRR performance is enhanced using a feed forward circuit. The output voltage of proposed LDO regulator has 32 discrete voltage levels...
Human body implants, portable electronic gadgets and a number of distributed sensor network applications required low power as well as low energy consuming electronic circuits. Most of such electronic circuits need analog to digital converters also. In this paper the authors are proposed a design of the level crossing analog to digital converter (LC-ADC) architecture. The proposed circuit has been...
In integrated circuits, time resolution is preferred over voltage resolution as it offers larger operating range. Time difference amplifiers are also useful in measurement of small phase differences. A simple but high gain Time Difference Amplifier (TDA) is presented in this paper. The TDA amplifies the width of a pulse for precise measurement of time difference. The pulse width amplification is achieved...
In this paper a hexagonal shaped fractal monopole antenna is thoroughly investigated for UWB applications. The antenna is mounted on FR4 dielectric substrate and is fed by a 50 ohm microstrip feed line. Basically DGS and DMS structures are introduced to obtain multiband characteristics in UWB frequency range. The simulated results show stable radiation patterns and good return loss of less than −10...
In this paper meander slot antenna is thoroughly investigated for dual band applications. The antenna is mounted on high dielectric substrate and fed by a 50 ohm micro strip feedline. Meander slot antenna has finite ground plane and operated at frequency range of 2400MHz to 3500MHz for WLAN and Fixed WI-Max. This simulated result show stable radiation patterns and good return loss of less than −10...
In this paper, a modified fractal Sierpinski Antenna is proposed for wireless applications. The antenna under investigation is fed by a 50 ohm microstrip line. The basic shape of the fractal antenna is a triangle which is modified with a hexagon slot and iteration of self similar design. Wide bandwidth of 3.05 GHz and 2.4 GHz is obtained between 2.85–5.9 GHz and 9.5–11.9 GHz respectively. Various...
In mobile communication, dual band antenna plays a vital role in recent time. This paper presents the simulation analysis of dual band antenna using SMTL for bandwidth and gain enhancement. It's range of frequency is from 2.4GHz to 3.5GHz for WLAN & Wi-MAX application. Various govt. and private sector organizations make use of dual bands antenna to solve the problem of antenna bandwidth in mobiles...
In our paper we have compared the performance of network evaluation tools (PackETH, Ostinato, and D-ITG) over 10Gbps link. The performance of these tools was evaluated in terms of bandwidth utilization over the link. In laboratory setup, two computers with Linux operating systems were connected via 10Gbps crossover cable. TCP and UDP traffic for the payload sizes varying from 64Bytes to 8950bytes...
Timely detection of other vehicles in the vicinity is of extreme importance to help avoid accidents and potential loss of human life, traffic jams especially in Hilly areas with hair pins bends and reduced visibility condition in dense foggy areas. This paper introduces a GPS based system which actively and continuously sends vehicle location coordinates (latitude/longitude) to the eye in the sky...
Spam is the most dangerous threat to email systems today. Spam is any unwanted and harmful mail. Separation of spam from normal mails is essential. This paper surveys different spam filtering techniques, Support Vector Machine (SVM) training problems and need to introduce MapReduce Hadoop to train SVM. Techniques to separate spam mails are word based, content based, machine learning based and hybrid...
Rogues are unwanted whether they are access points or clients as they steal critical data and bandwidth. To detect a rogue access point different approaches are used. These approaches are briefly classified as Client-side approach, Server-side and Hybrid approach. Every approach has its own advantages and disadvantages. Clients have limited resources and do not possess much control over network when...
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